No output for some species in output model

[Alice Burton]

Hi,

I have a general question. 

I need to run WRF-Chem model to have SO2, NO3, H2SO4, O3 concentrations. After running the model I did not see any variable  listed  corresponding to those species concentration in the model output files. Should I make changes in chem registry?

How can I have concentrations for those species please?

Thanks in advance for your help.

Kind regards.